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| Number | Title | Issue Date |
| 7361412 | Nanostructured soldered or brazed joints made with reactive multilayer foils Self-propagating formation reactions in nanostructured multilayer foils provide rapid bursts of heat at room temperature and therefore can act as local heat sources to melt solder or braze layers and join materials. This reactive joining method provides very localiz... | 04/22/2008 |
| 7357697 | Superhard material article of manufacture The invention relates to abrasive water jet systems comprising an abrasive water jet mixing tube having a longitudinal bore lined with a superhard material, including such systems which use cubic boron carbide (CBN), diamond, or other materials with a hardness great... | 04/15/2008 |
| 7297177 | Cold work steel A cold work steel has the following chemical composition in weight-%: 1.25-1.75% (C+N), however at least 0.5% C 0.1-1.5% Si 0.1-1.5% Mn 4.0-5.5% Cr 2.5-4.5% (Mo+W/2), however max. 0.5% W 3.0-4.5% (V+Nb/2), however max. 0.5% Nb max 0.3% S balance iron and unavoidable... | 11/20/2007 |
| 7288132 | Advanced erosion resistant carbide cermets with superior high temperature corrosion resistance Cermets are provided in which a substantially stoichiometric metal carbide ceramic phase along with a reprecipitated metal carbide phase, represented by the formula MxCy, is dispersed in a metal binder phase. In MxCy M is ... | 10/30/2007 |
| 7250069 | High-strength, high-toughness matrix bit bodies A new composition for forming a matrix body which includes spherical sintered tungsten carbide and an infiltration binder including one or more metals or alloys is disclosed. In some embodiments, the composition may include a Group VIIIB metal selected from one of N... | 07/31/2007 |
| 7238219 | Grain growth inhibitor for superfine materials A superfine material made by incorporation of an inorganic polymer precursor of a grain growth inhibitor into intermediates useful for the production of superfine materials. The precursor/nanostructured material composite is optionally heat treated at a temperature ... | 07/03/2007 |
| 7204866 | Niobium or tantalum powder and method for production thereof, and solid electrolytic capacitor A niobium or tantalum powder of the present invention comprises aggregates in which primary particles of niobium or tantalum are aggregated, and have a pore distribution having a peak in the range from 1 to 20 μm as measured by mercury porosimetry. That is, the nio... | 04/17/2007 |
| 7179319 | Fine grained sintered cemented carbide, process for manufacturing and use thereof The invention proposes a fine grained sintered cemented carbide containing chromium and based on WC and a binder based on Co or CoNiFe, and having at least one additional phase comprising at least one carbide or mixed carbide of tantalum. For improving the high-temp... | 02/20/2007 |
| 7153340 | Process for manufacturing nano-phase TaC-transition metal based complex powder Ultra fine TaC-transition metal based complex powder is prepared by: dispersing a mixture of a Ta-containing material and a transition metal-containing water soluble salt into a solvent; stirring the mixture and spray-drying the stirred material to obtain precursor ... | 12/26/2006 |
| 7128773 | Compositions having enhanced wear resistance A composite material includes a double cemented carbide and a coarse grain dopant, wherein the coarse grain is added in an amount sufficient to improve wear resistance of virgin double cemented carbide. The double cemented carbide may selected from the group of carb... | 10/31/2006 |
| 7108828 | Method of making open cell material The porous material of the present invention is produced by heating a dry powder mixture, containing mainly an organic solid binder and inorganic particles. The mixture is foamed while the organic binder is melted. Foaming comes from a foaming agent in the powder mi... | 09/19/2006 |
| 7074253 | Advanced erosion resistant carbide cermets with superior high temperature corrosion resistance Cermets are provided in which a substantially stoichiometric metal carbide ceramic phase along with a reprecipitated metal carbide phase, represented by the formula MxCy, is dispersed in a metal binder phase. In MxCy M is ... | 07/11/2006 |
| 7073476 | Cylinder block In a cylinder block, at least one member disposed around a bore is made of a metal matrix composite including a ceramic compact having a three-dimensional mesh structure comprised of a plurality of spherical cells and a plurality of communicating pores for allowing ... | 07/11/2006 |
| 7070643 | Compositionally graded sintered alloy and method of producing the same There is disclosed a compositionally graded sintered alloy which comprises: 1 to 40% by weight of a iron group metal; 0.1 to 10% by weight of at least one type of a specific metal element selected from the group consisting of Cr, Au, Ge, Cu; Sn, Al, Ga, Ag, In, Mn a... | 07/04/2006 |
| 7048080 | Roller cone bits with wear and fracture resistant surface Roller cone bits include a steel bit body having a leg extending therefrom. A steel cone is disposed on the leg and includes steel cutting elements projecting outwardly therefrom. One of the cutting elements comprises a steel base integral with the cone and that pro... | 05/23/2006 |
| 6955532 | Method and apparatus for the manufacture of high temperature materials by combustion synthesis and semi-solid forming An apparatus and method of producing dense, near net shape components of advanced materials such as intermetallics, ceramics, and their composites. The method consists of two major steps combined into one. First step includes the preparation of semi-solid or liquid ... | 10/18/2005 |
| 6955233 | Roller cone drill bit legs A method is disclosed for applying hardfacing to a shirttail portion of a roller cone drill bit, including masking around the shirttail portion of the bit and operating a high pressure/high velocity oxygen fuel torch to apply the hardfacing to the shirttail portion.... | 10/18/2005 |
| 6951578 | Polycrystalline diamond materials formed from coarse-sized diamond grains PCD materials of this invention comprise diamond crystals that are bonded together with a catalyst/binder material. The PCD material is prepared by combining diamond grains with a catalyst/binder material either as a premixture or by infiltration during sintering. T... | 10/04/2005 |
| 6946096 | Use of powder metal sintering/diffusion bonding to enable applying silicon carbide or rhenium alloys to face seal rotors A method for making aerospace face seal rotors reinforced by rhenium metal, alloy, or composite in combination with silicon carbide or other ceramic. The resulting rotor also is disclosed. Ceramic grains, preferably silicon carbide (SiC), are mixed with powdered met... | 09/20/2005 |
| 6926969 | Process for the production of sintered porous bodies The invention relates to a process for the production of sintered porous bodies, to porous bodies produced correspondingly using the process, and to their use. With the solution according to the invention, sintered bodies which achieve improved properties, such as a... | 08/09/2005 |
| 6924454 | Method of making an abrasive water jet with superhard materials Methods for making abrasive water jet mixing tubes with superhard materials are presented. Also presented are methods for making a tubular elongate superhard material bodies. ... | 08/02/2005 |
| 6911063 | Compositions and fabrication methods for hardmetals Hardmetal compositions each including hard particles having a first material and a binder matrix having a second, different material comprising rhenium or a Ni-based superalloy. A two-step sintering process may be used to fabricate such hardmetals at relatively low ... | 06/28/2005 |
| 6908688 | Graded composite hardmetals A multiple-region hardmetal tool piece. The tool piece includes a hardmetal body including a hard particle component and a binder; an additional body, the additional body including a hardmetal body having a hard particle component and a binder; a metal body or a cer... | 06/21/2005 |
| 6797031 | Wire-shaped product, method for its manufacturing, and wear part made of the product The invention concerns a method for the manufacturing of a wire-shaped product with high wear resistance. The characteristic feature is that a melt is prepared of a martensitic stainless chromium steel which contains in weight-% 0.6-3.0 C, max 2.0 Si max 2.0 Mn, 13-... | 09/28/2004 |
| 6767416 | Corrosion resistant, high strength alloy and a method for manufacturing the same A corrosion resistant, high strength austenitic stainless steel consisting of 1.0% or less of Si, 2.0% or less of Mn, 0.5% or less of O, 7 to 30% of Ni, 14 to 26% of Cr, 0.3% or less of combination of C and N, at least one element selected from the group consisting ... | 07/27/2004 |
| 6761750 | Cemented carbide with binder phase enriched surface zone A cutting tool insert has a cemented carbide substrate and a coating. The cemented carbide substrate includes 73-93 wt % WC, 4-12 wt % binder phase, and cubic carbide phase with a binder phase enriched surface zone essentially free of cubic carbide phase. The cubic ... | 07/13/2004 |
| 6712871 | Sintered alloy for valve seat having excellent wear resistance and method for producing the same A sintered alloy composition for automotive engine valve seats, and a method for producing the same, are described. An iron base sintered alloy composition comprising vanadium carbide particles, Fe—Co—Ni—Mo alloy particles, and Cr—W—Co—C alloy particles ... | 03/30/2004 |
| 6682580 | Matrix powder for the production of bodies or components for wear-resistant applications and a component produced therefrom A matrix powder for the production of components for wear-resistant applications by forming the matrix powder, along with an infiltrant, into a matrix, and and a wear-resistant component produced therefrom are presented. In order to improve mechanical pro... | 01/27/2004 |
| 6656245 | Niobium sintered body for capacitor and process for producing same A niobium sintered body for a capacitor, which exhibits an LC value of not larger than 300 μA/g as measured after an electrolytic oxide film is formed thereon. The sintered body preferably exhibits a product (CV) [i.e., a product of capacity (C) with ele... | 12/02/2003 |
| 6607850 | Hard steel articles Chain parts and other steel articles are provided with hard, wear-resistant carbide coatings by tumbling them in a heated retort with a particulate mix which includes a source of vanadium and/or niobium. The steel substrate comprises a steel having at lea... | 08/19/2003 |
| 6547846 | Steel, use of the steel, product made of the steel and method of producing the steel The invention relates to a steel with a high wear resistance, high hardness and good notched bar impact strength, useful for the manufacture of products, in the use of which at least some of the features are desirable, preferably for the manufacture of to... | 04/15/2003 |
| 6521013 | Niobium sintered body for capacitor and replace with process for producing same A niobium sintered body for a capacitor, which exhibits an LC value of not larger than 300 μA/g as measured after an electrolytic oxide film is formed thereon. The sintered body preferably exhibits a product (CV) [i.e., a product of capacity (C) with ele... | 02/18/2003 |
| 6423111 | Ball for ball-point pen A ball for a ball-point pen is provided comprising cemented carbide of WC--Cr3 C2 --Co where VC is contained as a solid solution in the Cr3 C2 --CO phase which is a binder of WC particles and wherein the mean di... | 07/23/2002 |
| 6387552 | TiCN-based cermet A TiCN-based cermet comprises 5-25 weight % of a binder phase mainly composed of Co and/or Ni, the balance being substantially a hard phase and inevitable impurities, the hard phase being mainly composed of carbide, nitride and/or carbonitride and contain... | 05/14/2002 |
| 6387149 | Metal porous bodies, method for preparation thereof and metallic composite materials using the same A metal porous body having a skeleton which has a foam structure, composed of an alloy composed mainly of Fe and Cr and includes a Cr carbide and/or FeCr carbide uniformly dispersed therein. The metal porous bodies are obtained by preparing a slurry mainl... | 05/14/2002 |
| 6248149 | Hardfacing composition for earth-boring bits using macrocrystalline tungsten carbide and spherical cast carbide A hardfacing composition for an earth-boring bit has a quantity macrocrystalline tungsten carbide particles and a quantity of spherical cast tungsten carbide pellets. The particles and pellets are contained within a metal matrix which forms the balance of... | 06/19/2001 |
| 6228484 | Composite body, especially for a cutting tool A composite body of a microwave sintered composition of a cermet or hard metal as a modified surface layer which can promote the microwave sintering and can be of a thickness of 0.01 to 1 mm with a density gradually decreasingly inwardly or a thickness up... | 05/08/2001 |
| 6214079 | Triphasic composite and method for making same A method for fabricating a triphasic composite such as a WC/Co/diamond composite with a high volume fraction of diamond in a WC/Co matrix. The method involves sintering of a WC/Co powder compact to develop a porous preform, which displays some rigidity an... | 04/10/2001 |
| 6197436 | Method and composition for diffusion alloying of ferrous materials A method for diffusion coating workpieces of ferrous base metals such as carbon steel and cast iron includes the step of weighing and mixing the following components, in powdered form: Chromium 40-50 wt % Fe... | 03/06/2001 |
| 5984996 | Nanostructured metals, metal carbides, and metal alloys Methods for the manufacture of nanostructured metals, metal carbides, and metal alloys are presented, such metals including nanostructured aluminum, chromium, iron, molybdenum, vanadium, and steel. Preferably, the nanostructured steel is of the M50 type, ... | 11/16/1999 |
